Tower humidifier



FIG. 1 is a perspective view of a tower humidifier of the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is rear elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is bottom plan view thereof.

The portions of the Figures shown in broken lines are not part of the claimed design and are for illustration only. 

CLAIM The ornamental design for a tower humidifier, as shown and described. 